Anti-friction support for cars



(No Model.) 2 Sheets-Sheet 1. L. K. JEWETT. ANTI-PRICTION SUPPORT POR GARS.

No. 427,691. Patented May 13, 1890.

'2 Sheets-Sheet 2. L; K. JEWETT. ANTI-PRIGTION SUPPORT FOR GARS.

Patented May 13, 1890.

(No Model.)

l "ghn UNITED STATES PATENT OFFICE.

LUTHER K. JEVETT, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO TH E JEVETT SUPPLY COMPANY, OF PORTLAND, MAINE.

ANTI-FRICTION SUPPORT FOR CARS.

`SPECIQFILAIIIOBT forming` part of Letters Patent NO. 427,691, dated May 13, 1890.

Application filed .Tune 29, 1889. Serial No. 316,027. (No model.)

To @ZZ whom, it may concern.-

le it known that I, LUTHER K. JEwETT, of Boston, county of Suffolk, State of Massachusetts, have invented an Improvement in Anti Friction Supports, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing1 like parts.

This invention has for its object to provide ro a novel anti-friction bearing or support especially adapted, among other things, to be used as a side bearing for car-bodies, whereby the friction between the car-body and its truck, or the bolster thereof, as the said car-body is carried around a curve in the railway-track, may be reduced to a minimum, thus effecting a very considerable saving in the motive power employed to draw the car over the road, and at the same time enabling the car to be run 2o at a greater speed with safety.

In accordance with my invention my improved anti-friction bearing or support consists, essentially, of a base plate or frame preferably provided with side ledges or strips to form a guideway, between which are located anti-friction devices, preferably two or more rollers having proj cctious or arbors to support a spacing-frame, composed, essentially, of side bars, as will be described, the

said rollers being made of sufiiciently large diameter to project above the top surface of the spacing-frame and receive upon them a top frame preferably made as a plate having side strips or ledges similar to the baseplate. The top plate and the base plate or frame are provided, as herein shown, with gear-teeth to be engaged by a cog or pinion mounted on a projection or arbor of one or more of the said rollers. The top plate or 4o frame has secured to or resting upon it the body to be moved-as, for instance, a can body-and the Weight of the said body and top plate is entirely supported upon the rollers. The side bars of the spacing-frame are provided with notches or recesses to receive the ends of the projections or arbors of the rollers, and the said notches or recesses in the side bars are located at the proper distance apart to prevent the surfaces of adjao cent rollers from coming in contact with each other, thus obviating friction between the said rollers.

My invention therefore consists, essentially, in the combination, with a roller-sup-Y porting base plate or frame, of anti-friction devices movable thereon, a spacingframe, a top plate or frame resting upon the said antifriction devices, and gearing located between the said plates or frames to engage gearing on one of the said anti-friction surfaces to 6o rotate the same, substantially as will be described.

Other features of my invention will be pointed out in the claims at the end of this specification.

Figure l is a side elevation of a sufficient portion of a railwaycar provided with my improved anti-friction bearing or support to enable lny invention to be understood., I having chosen to illustrate my invention as applied 7o to a car; Fig. 2, a transverse section of the car-truck shown in Fig. l on line :c x,- Fig. 3,

a top or plan view of the car-truck shown in Fig. 2,with the anti-friction bearing supported thereon; Figxfl, a side elevation, on an enlai-ged scale, of the anti-friction bearing or support shown separately; Fig. 5, au isomet- `rio view of the spacing-frame inverted from its normal or. operative position; Fig. (i, a top or plan view of the anti-friction bearing on So an enlarged scale, with the top plate removed; Fig. 7, a transverse section of the anti-fri@ tion bearingon line y y, Fig. 6, the top plate or frame being shown in position; Fig. 8, an under side view of the top plate removed; Fig. 9, an under side View of the spacingframe with the rollers in operative position; Fig. 10, a detail to be referred to; and Figs.

ll and l2, modifications to be referred to.

Referring to Figs. l and 2, A represents a 9o car-body, which may be supported at its center in usual manner by a truck A', of any usual construct-ion.

The truck A', provided, as shown, with the usual equalizcrbar A2 and equalizer-springs 95 A3, has firmly secured to its side frames, only one A4 of which is shown, a side support consisting, essentially, of two side pieces, each made in two parts a a2, and a connecting bar or plate a, substantially as shown and deroo scribed in another application, Seria-l No. 302,657, tiled by me .March 9, 11.889, wherein like parts are designated by like letters. 'lhe side support referred to is firmly secured to the side frame Al of the truck, as by bolts d, and the part d of the said side support is provided with a shoulder a, extended over the equalizer-bar, so that a firm or rigid side support is obtained for the car-body when tipped, as described in the application referred to.

The side support, as shown in Figs. l and 2, sustains my improved anti-friction bearing or support, consisting, essentially, of a base plate or frame b, rollers b', resting thereon, a spacing-frame b2, and a top plate or fra-me b3, the said base-plate being preferably supported, as herein shown in Figs. l and 2, by yielding buffers-preferably spiral springs D11-having their upper sides extended into sockets in the under side of the base-plate and their lower ends extended into similar sockets in a plate Ui, which rests upon the plate a, but which may form part thereof.

The base plate or frame ZJ ris provided with a guideway on its upper surface, preferably formed-by side strips or ledges 1111' U7. The side strips bs 67 are located a sufficient distance apart to receive between them antifriction devices, preferably conically-shaped rollers b', there being three such rollers herein shown, and for convenience marked 2, 3, and 4. (See Figs. 6 and 9.) Each roller 1) is provided with project-ions or arbors b9 1110, extended froln its opposite ends, the said arbors of the rollers 2 tbeing extended into recesses 612 (see Fig. 5) in the sides D13 b1" of a spacing-frame for said rollers, the said sides being united by cross bars or pieces Z211. The arbol1 b1@ of the center roller b (marked E3) is provided, as shown, with an enlargement or collar c, which ab'uts against one side, as 513, of the spacing-frame when the latter is fitted upon the arbors of the rollers, thereby preventing'lateral movement 0f the roller marked The notches or recesses 512, into which extend the arbors of the rollers marked 2 4, project but partially through the sides of the supporting-frame, as clearly shown in Fig. 5, thus preventing lateral movement of the said rollers, and, as herein shown, the center notch in the side Z113 (herein marked 5 in Fig. 5) is extended entirely through the said side to permit the arbor Z210 of the roller 3 to project beyond the side 1913 of the spacing-frame and receive upon it a cog or pinion c to engage gear-teeth c2 on the base-plate b. The rollers b support a top plate or frame b3 similar in construction to the base-plate I), it being provided with side strips or ledges c1 c6 to form a guideway into which the rollers eX- tend, and the said rollers are made of sufficiently large diameter to project above the upper surface of the spacing-frame, and thus support the top plate entirely free from the 'engaged by the cog or pinion c.

said spacing-frame. The top plate b3 is provided, as herein shown, with gear-teeth to be teeth c2 on the bottom plate are preferably cast with a slot or space between them, through whichr water, dust, &c., may pass, and to strengthen the said teeth a re-enforcing strip e7 (see Figs. (i, 7, and l0) maybe east integral with or secured to the base-plate. The top plate b3 is firmly secured to the car-body.

- I have shown the anti-friction bearing as sustained by a side support secured to the truck-frame; but I do not desire to limit myself in this respect, as the same may be supported on and secured to the bolster CZ of the The gearcar-truck, as shown in Fig. Il, it taking the place of the usual bolster-curve plates.

The notches or recesses in the sides of the spacing-frame are located at such distance apart as to prevent the surfaces of the rollers froln coming in contact.

W'hen applied to acar-truck, the base-plate, spacing-frame, and top plate will preferably be made in the arcs of circles having as their center the transverse center of the truck.

In practice my improved anti-friction su pport is especially advantageous when the ea r is going around curves in the track, for the weight of the car-body is thrown upon the rollers, which are relieved from all friction, thus enabling the car-body to curve with a minimum friction, thereby effecting a very considerable saving in the motive power used to draw the car.

I prefer to employ rollers as the anti-fric tion surface; but I do not desire to limit my invention to this construction, as sphericalV l. In an antifrict ion support, the combina? tion, with a rollersupporting base plate or frame, of anti-friction devices, substantially as described, movable thereon, a spacingframe, a top plate or frame resting upon the said anti-friction devices, and gearing located' between the said plates or frames to engage gearing on one of the said antifriction devices to rotate the same, substantially as described.

2. In an anti-friction support,'tho combination, with a base plate or frame provided with a guideway, of anti-friction devices, substantially as described, movable thereon, a spacing-frame to keep said anti-friction devices IOO IIO

separated, and a top plate or frame resting on the said anti-friction devices, substantially as described.

3. In an anti-friction support, the combination, with a base plate or frame provided with a guideway, of anti-friction rollers movable thereon, a spacing-frame, a t-op plate or frame provided With a guideway, and gearing between said top plate and base-plate, to operate substantially as described.

4. The combination, With a car-truck and a car-body mounted thereon, of an anti-friction support sustained at the side of the truck and consisting of a base-plate, anti-friction rollers movable thereon, a spacing-frame, a top plate or frame secured to the car-body, and gearing intermediate of the said top plate and base plate, substantially as described.

5. The combination, Witha ca1'-truok,a carbody mounted thereon, and aside support for said ear-body, of au anti-friction support sustained by said side supportand composed ot a base plate or frame, anti-friction rollers movable thereon, a spacing-fram e, a top plate or frame attached to the car-body, and gearing intermediate of the said top and base plates, substantially as described.

(i. The combination, with a ear-truck, a carbody mounted thereon, and a side support for said car-body, of au anti-friction support sustained by said side support and composed of a base plate or frame, anti-friction rollers movable thereon, a spacing-frame, a top plate or frame at-tached to the car-body,'and gearing intermediate of the said top and base plates, and springs interposed between said side support and the base-plate ot the antifriction support, substantially as described.

7. In an anti-friction support, the combination, With a base plate orframe provided with a guideway, of anti-friction devices, substau-1 tially as described, movable thereon, a spacing-frame to keep said anti-friction devices separat-ed, and a top plate or frame provided with a guideway and resting` on said antifricton devices, substantially as described.

S. In an anti-friction support, the combination, with a base plate or frame, of anti-frietion rollers provided with arbors, a spacingframe supported by said arbors, and a top plate or frame resting on the said rollers out of contact with the said spacing-frame, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

LUTHER K. JEVVEF' Witnesses:

JAs. H. CHURCHILL, EMMA J. BENNETT. 

